Resonant tunneling in a dissipative environment

Published

Journal Article

We measure tunneling through a single quantum level in a carbon nanotube quantum dot connected to resistive metal leads. For the electrons tunneling to/from the nanotube, the leads serve as a dissipative environment, which suppresses the tunneling rate. In the regime of sequential tunneling, the height of the single-electron conductance peaks increases as the temperature is lowered, although it scales more weakly than the conventional T-1. In the resonant tunneling regime (temperature smaller than the level width), the peak width approaches saturation, while the peak height starts to decrease. Overall, the peak height shows a nonmonotonic temperature dependence. We associate this unusual behavior with the transition from the sequential to the resonant tunneling through a single quantum level in a dissipative environment. © 2009 The American Physical Society.

Full Text

Duke Authors

Cited Authors

  • Bomze, Y; Mebrahtu, H; Borzenets, I; Makarovski, A; Finkelstein, G

Published Date

  • June 22, 2009

Published In

Volume / Issue

  • 79 / 24

Electronic International Standard Serial Number (EISSN)

  • 1550-235X

International Standard Serial Number (ISSN)

  • 1098-0121

Digital Object Identifier (DOI)

  • 10.1103/PhysRevB.79.241402

Citation Source

  • Scopus